Cisco Security Advisory

Advisory ID: cisco-sa-20110223-telepresence-ctrs

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20110223-telepresence-ctrs

Revision 1.0

For Public Release 2011 February 23 16:00  UTC (GMT)

Summary

Multiple vulnerabilities exist within the Cisco TelePresence Recording Server. This security advisory outlines details of the following vulnerabilities:

• Unauthenticated Java Servlet Access
  

• Common Gateway Interface (CGI) Command Injection
  

• Unauthenticated Arbitrary File Upload
  

• XML-Remote Procedure Call (RPC) Arbitrary File Overwrite
  

• Cisco Discovery Protocol Remote Code Execution
  

• Ad Hoc Recording Denial of Service
  

• Java Remote method Invocation (RMI) Denial of Service
  

• Unauthenticated XML-RPC Interface
  

Duplicate Issue Identification in Other Cisco TelePresence Advisories

The Unauthenticated Java Servlet Access vulnerability affects the Cisco TelePresence Multipoint Switch and Recording Server. The defect that is related to each component is covered in each associated advisory. The Cisco Bug IDs for these defects are as follows:

• Cisco TelePresence Multipoint Switch - CSCtf42008
  
• Cisco TelePresence Recording Server - CSCtf42005
  

The Unauthenticated Arbitrary File Upload vulnerability affects the Cisco TelePresence Multipoint Switch and Recording server. The defect that is related to each component is covered in each associated advisory. The Cisco Bug IDs for these defects are as follows:

• Cisco TelePresence Multipoint Switch - CSCth61065
  
• Cisco TelePresence Recording Server - CSCth85786
  

The Cisco Discovery Protocol Remote Code Execution vulnerability affects Cisco TelePresence endpoints, Manager, Multipoint Switch, and Recording Server. The defect that is related to each component is covered in each associated advisory. The Cisco Bug IDs for these defects are as follows:

• Cisco TelePresence endpoint devices - CSCtd75754
  
• Cisco TelePresence Manager - CSCtd75761
  
• Cisco TelePresence Multipoint Switch - CSCtd75766
  
• Cisco TelePresence Recording Server - CSCtd75769
  

The Java RMI Denial of Service vulnerability affects the Cisco TelePresence Multipoint Switch and Recording Server. The defect that is related to each component is covered in each associated advisory. The Cisco Bug IDs for these defects are as follows:

• Cisco TelePresence Multipoint Switch - CSCtg35825
  
• Cisco TelePresence Recording Server - CSCtg35830
  

This advisory is posted at http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20110223-telepresence-ctrs.

Affected Products

The Cisco TelePresence solution allows for immersive, in-person communication and collaboration over the network with colleagues, prospects, and partners even when they are located in opposite hemispheres.

This security advisory describes multiple distinct vulnerabilities in the Cisco TelePresence Recording Server. These vulnerabilities are independent of each other.

Unauthenticated Java Servlet Access

A number of sensitive Java Servlets delivered via a Java Servlet framework within the Cisco TelePresence Recording Server could allow a remote, unauthenticated attacker to perform actions that should be restricted to administrative users. To successfully exploit this vulnerability, the attacker would need the ability to submit a crafted request to an affected device on TCP port 80, TCP port 443, or TCP port 8080.

An attacker must perform a three-way TCP handshake and establish a valid session to exploit these vulnerabilities.

• Cisco TelePresence Recording Server - CSCtf42005 ( registered customers only) has been assigned the CVE identifier CVE-2011-0383.
  

CGI Command Injection

A CGI command injection vulnerability exists within the Cisco TelePresence Recording Server that could allow a remote, unauthenticated attacker to execute arbitrary commands with elevated privileges. To successfully exploit this vulnerability the attacker would need the ability to submit a malformed request to an affected device via TCP port 443.

An attacker must perform a three-way TCP handshake and establish a valid session to exploit these vulnerabilities.

• Cisco TelePresence Recording Server - CSCtf97221 ( registered customers only) has been assigned the CVE identifier CVE-2011-0382.
  

Unauthenticated Arbitrary File Upload

An arbitrary file upload vulnerability exists within the administrative web interface of the Cisco TelePresence Recording Server. An unauthenticated, remote attacker could place content to arbitrary locations on the device by submitting crafted requests to the affected device. To successfully exploit this vulnerability the attacker would need the ability to submit a crafted request to an affected device on TCP port 80 or 443.

An attacker must perform a three-way TCP handshake and establish a valid session to exploit this vulnerability.

• Cisco TelePresence Recording Server - CSCth85786 ( registered customers only) has been assigned the CVE identifier CVE-2011-0385.
  

XML-RPC Arbitrary File Overwrite

An arbitrary file overwrite vulnerability exists within Cisco TelePresence Recording Server devices that could allow an unauthenticated, remote attacker to overwrite arbitrary files with logging data. This vulnerability could be leveraged to obtain full control of the affected device. To successfully exploit this vulnerability the attacker would need the ability to submit a malformed request to an affected device via TCP port 12102 or 12104.

An attacker must perform a three-way TCP handshake and establish a valid session to exploit this vulnerability.

• Cisco TelePresence Recording Server - CSCti50739 ( registered customers only) has been assigned the CVE identifier CVE-2011-0386.
  

Cisco Discovery Protocol Remote Code Execution

A remote code execution vulnerability exists within Cisco TelePresence Recording Server devices. This vulnerability could allow an unauthenticated, adjacent attacker to trigger a buffer overflow condition. To exploit this vulnerability, the attacker must submit a malicious Cisco Discovery Protocol packet to the affected system.

Because Cisco Discovery Protocol works at the data-link layer (Layer 2), an attacker must have a way to submit an Ethernet frame directly to an affected device. This may be possible in situations where the affected system is part of a bridged network or connected to a nonpartitioned device such as a network hub.

• Cisco TelePresence Recording Server - CSCtd75769 ( registered customers only) has been assigned the CVE identifier CVE-2011-0379.
  

Ad Hoc Recording Denial of Service

A denial of service vulnerability exists within Cisco TelePresence Recording Server devices. The vulnerability could allow an unauthenticated, remote attacker to cause all recording and playback threads on the device to be consumed. A restart of the affected device may be required to regain functionality. To successfully exploit this vulnerability the attacker would need the ability to submit a malformed request to an affected device via TCP port 80.

An attacker must perform a three-way TCP handshake and establish a valid session to exploit this vulnerability.

• Cisco TelePresence Recording Server - CSCtf97205 ( registered customers only) has been assigned the CVE identifier CVE-2011-0391.
  

Java RMI Denial of Service

A denial of service vulnerability exists within Cisco TelePresence Recording Server devices due to a failure to properly restrict access to the RMI interface of the Java Servlet framework. An unauthenticated, remote attacker could trigger an out-of-memory condition on the Servlet host by issuing a series of crafted requests. To successfully exploit this vulnerability the attacker would need the ability to communicate to an affected device on TCP port 8999.

An attacker must perform a three-way TCP handshake and establish a valid session to exploit this vulnerability.

• Cisco TelePresence Recording Server - CSCtg35830 ( registered customers only) has been assigned the CVE identifier CVE-2011-0388.
  

Unauthenticated XML-RPC Interface

An unauthenticated XML-RPC interface exists within Cisco TelePresence Recording Server devices. This vulnerability could allow an unauthenticated, remote attacker to perform a limited number of actions on the system that should be restricted to authorized users. To successfully exploit this vulnerability the attacker would need the ability to communicate to an affected device on TCP port 8080.

An attacker must perform a three-way TCP handshake and establish a valid session to exploit this vulnerability.

• Cisco TelePresence Recording Server - CSCtg35833 ( registered customers only) has been assigned the CVE identifier CVE-2011-0392.
  

Cisco has provided scores for the vulnerabilities in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this Cisco Security Advisory is done in accordance with CVSS version 2.0.

CVSS is a standards-based scoring method that conveys vulnerability severity and helps determine urgency and priority of response.

Cisco has provided a base and temporal score. Customers can then compute environmental scores to assist in determining the impact of the vulnerability in individual networks.

Cisco has provided an FAQ to answer additional questions regarding CVSS at

http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html .

Cisco has also provided a CVSS calculator to help compute the environmental impact for individual networks at

http://intellishield.cisco.com/security/alertmanager/cvss.

Successful exploitation of the Unauthenticated Java Servlet Access (CSCtf42005) vulnerability could allow an unauthenticated, remote attacker to take complete control of the affected device or system.

Successful exploitation of the CGI Command Injection (CSCtf97221) vulnerability could allow an unauthenticated, remote attacker to take complete control of the affected device or system.

Successful exploitation of the Unauthenticated Arbitrary File Upload (CSCth85786) vulnerability could allow an unauthenticated, remote attacker to place or overwrite arbitrary files on the affected system. This may allow the attacker to gain full control of the affected device.

Successful exploitation of the XML-RPC Arbitrary File Overwrite (CSCti50739) vulnerability could allow an unauthenticated, remote attacker to create a denial of service condition. In some instances this issue could be leveraged to gain complete control of the affected system.

Successful exploitation of the Cisco Discovery Protocol Remote Code Execution (CSCtd75769) vulnerability could allow an unauthenticated, adjacent attacker to take complete control of the affected system.

Successful exploitation of the Ad Hoc Recording Denial of Service (CSCtf97205) vulnerability could allow an unauthenticated, remote attacker to cause a persistent denial of service condition on an affected device.

Successful exploitation of the Java RMI Denial of Service (CSCtg35830) vulnerability could allow an unauthenticated, remote attacker to cause all web-based services to become inaccessible.

Successful exploitation of the Unauthenticated XML-RPC Interface (CSCtg35833) vulnerability could allow an unauthenticated, remote attacker to perform a number of actions that should be restricted to authenticated users.

When considering software upgrades, also consult http://www.cisco.com/go/psirt and any subsequent advisories to determine exposure and a complete upgrade solution.

In all cases, customers should exercise caution to be certain the devices to be upgraded contain sufficient memory and that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, contact the Cisco Technical Assistance Center (TAC) or your contracted maintenance provider for assistance.

Each row of the following Cisco TelePresence System Software table defines a specific defect, the first fixed release, and the recommended release to resolve all the security issues identified in this advisory as well as other non-security-related issues. Cisco recommends upgrading to a release equal to or later than the release in the Recommended Release column of the table.

Cisco recommends that customers upgrade all components of the Cisco TelePresence solution to 1.7.1 or later.

There are no device- or system-based workarounds for the identified vulnerabilities.

Additional mitigations that can be deployed on Cisco devices within the network are available in the Cisco Applied Intelligence companion document for this advisory: http://tools.cisco.com/security/center/content/CiscoAppliedMitigationBulletin/cisco-amb-20110223-telepresence

Cisco has released free software updates that address these vulnerabilities. Prior to deploying software, customers should consult their maintenance provider or check the software for feature set compatibility and known issues specific to their environment.

Customers may only install and expect support for the feature sets they have purchased. By installing, downloading, accessing or otherwise using such software upgrades, customers agree to be bound by the terms of Cisco's software license terms found at http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html, or as otherwise set forth at Cisco.com Downloads at http://www.cisco.com/public/sw-center/sw-usingswc.shtml.

Do not contact psirt@cisco.com or security-alert@cisco.com for software upgrades.

Customers with Service Contracts

Customers Using Third-Party Support Organizations

Customers Without Service Contracts

The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities described in this advisory.

All vulnerabilities identified within this Security Advisory were discovered internally by Cisco.

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A stand-alone copy or Paraphrase of the text of this document that omits the distribution URL in the following section is an uncontrolled copy, and may lack important information or contain factual errors.

This advisory is posted on Cisco's worldwide website at:

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20110223-telepresence-ctrs

In addition to worldwide web posting, a text version of this notice is clear-signed with the Cisco PSIRT PGP key and is posted to the following e-mail and Usenet news recipients.

• cust-security-announce@cisco.com
  
• first-bulletins@lists.first.org
  
• bugtraq@securityfocus.com
  
• vulnwatch@vulnwatch.org
  
• cisco@spot.colorado.edu
  
• cisco-nsp@puck.nether.net
  
• full-disclosure@lists.grok.org.uk
  
• comp.dcom.sys.cisco@newsgate.cisco.com
  

Future updates of this advisory, if any, will be placed on Cisco's worldwide website, but may or may not be actively announced on mailing lists or newsgroups. Users concerned about this problem are encouraged to check the above URL for any updates.

Complete information on reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco, is available on Cisco's worldwide website at http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html. This includes instructions for press inquiries regarding Cisco security notices. All Cisco security advisories are available at http://www.cisco.com/go/psirt.